| dc.description.abstract | An experiment was carried out at the Laboratories of Horticulture, and Food Processing
and Preservation, Hajee Mohammad Danesh Science and Technology University
(HSTU), Dinajpur during June to December, 2018 to study the shelf-life and
physicochemical changes of mango cv. Lamgra under different postharvest conditions.
This single factor storage experiment was conducted in the completely randomized
design with five replications. In the experiment, mango fruits cv. Langra were stored in
five conditions: T0= open condition, T1= 1-MCP (150 nmol mol-1
) treatment, T2= 1-MCP
(200 nmol mol-1
) treatment, T3= 0.5% Chitosan treatment, T4 = 1% Chitosan treatment,
and T5 = 1.5% Chitosan treatment. The stored fruits were kept on a table at ambient
condition and monitored for 2, 4, 6 and 8 days of storage. The parameters studied were:
firmness, postharvest decay, weight loss, appearance, vitamin C, total sugar, reducing
sugar, non-reducing sugar, β-carotene and changes in the total polyphenol contents. In all
the cases, fruits stored in control condition lost weight rapidly and decayed after 6 DAS
showing lowest shelf-life. Oppositely, fruit stored in T5 indicated a significant lost of
weight (9.51%), retained firmness (0.95 kg/cm
2
), lowest postharvest decay and
biochemical qualities too: sugar accumulation (70.50 mg/100 g fw), vitamin C (18.30
mg/ 100g fw), β-carotene content (0.58 mg/100 g fw) and total polyphenol contents (195
mg GAE/100 g fw) on 6 DAS compared to other storage treatments. The significant
impact of treatment was found on the least decay percentage in the order of 1-MCP (200
nmol mol-1
) > 1-MCP (150 nmol mol-1
) > Chitosan (0.5%) > Chitosan (1%) and
Chitosan (1.5%). Hence, it could be concluded that the postharvest biochemical
treatments with both 1-MCP (200 nmol mol-1
) and Chitosan (1.5%) had the potential to
control spoilage, prolong the shelf-life and preserve valuable attributes of postharvest
quality of mango, presumably because of its effects on inhibition of ripening and
senescence processes by lowering the respiration rate. | en_US |
